Machines and machine tools for use in the manufacturing of ventilation products, elements and components; machines and machine tools for use in the sheet metal industry, including machines for the manufacture of helically formed metal tubing and ducting, cutting machines, elbow making machines, rollforming machines, stitchwelding machines, flanging and locking machines; motors and engines (except for land vehicles); machines, machine tools and machine apparatus for fastening and jointing; parts of and fittings for all the aforesaid goods